How do I save this fig tree? Same way you would save a pet whose essential needs are not being met. When you ask a plant to live in a pot, you normally accept the obligation to provide for its well being by ensuring the conditions you've asked it to tolerate are not outside of the parameters Mother Nature programmed it to deal with. At all times, the plant needs enough but not too much of each nutrient, water, and sun. It needs room in the grow medium to support new root growth and temperature/ humidity levels that allow the plant to prosper and complete its normal processes and cycles. There isn't enough information to determine what exactly is at issue, but a good starting point would be to examine your watering and fertilizing practices to ensure they are appropriate. Too, if the roots haven't run thorough the drain hole(s) and into the soil below, root congestion (being rootbound) after a 2-3 year stay in the same pot would be of considerable concern to the tree's ability to function efficiently.
Al
